Date: Sat, 11 Apr 2020 19:48:31 +0200 From: Robert Clausecker <fuz@fuz.su> To: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS server has gone crazy slow Message-ID: <20200411174831.GA54397@fuz.su> In-Reply-To: <2182C27C-A5D3-41BF-9CE9-7C6883E43074@distal.com> References: <2182C27C-A5D3-41BF-9CE9-7C6883E43074@distal.com>
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Hi Chris, What does zpool status say about the pool? Also check if the SMART values of these disks are okay. Yours, Robert Clausecker On Sat, Apr 11, 2020 at 05:36:37PM +0000, Chris Ross wrote: > I have a FreeBSD 11.3-STABLE server that is my router, using a ZFS > mirror (of two GPT disks) as it’s disk. It’s many years old, and has > only been misbehaving like this for a day or so. I’m trying to figure > out what’s wrong. > > I confirmed that internet connectivity isn’t the problem, and a reboot > didn’t fix it. (The reboot took 10-15 minutes to finish going > multi-user, starting daemons, due to the underlying problem described > below.) > > Truss’ing a very basic command (date), I can see that close() and > exit() calls are taking 1-2 seconds. All of the files being opened > are on ZFS, but I don’t know if that’s for sure related. Similarly, > using shell builtin “echo foo” always is immediate, but “/bin/echo” > sometimes works quickly, but sometimes the close() on > /var/run/ld-elf.so.hints takes 3-5 seconds. > > I _think_ this is a filesystem problem. It’s very hard to diagnose > because logging in, and doing anything, takes many seconds per > command. zpool status shows my mirror as online, so I’m not sure > where I should check. > > I’d appreciate any help! Thanks much… > > - Chris > > > _______________________________________________ > freebsd-fs@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-fs > To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org" > -- () ascii ribbon campaign - for an 8-bit clean world /\ - against html email - against proprietary attachments
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